White LED help/recommendation?

[andy_con]

reason being cos i like build things!

i want to build a bike light and am looking for a bright LED up to the job.

anyone got any recommendations? bare in mind it will be ran frombatteries.

[absolom7691]

Cree makes some pretty damn good LEDs. 3W 250lm. I would recommend the warm white. Cool white, though "brighter" has a lot of rayleigh scatter which hinders night vision.

http://www.ebay.com/itm/Cree-XR-E-P4...item3cc6b48b36

[LaNeK779]

take a look at the ultrafire ssc p7 led

bright as hell

http://www.ebay.co.uk/itm/SSC-P7-C-B...item3cae46e45c

[andy_con]

this any good?

http://www.ebay.com/itm/10pcs-10W-LE...item43b36b31a2

[andy_con]

take a look at the ultrafire ssc p7 led

bright as hell

http://www.ebay.co.uk/itm/SSC-P7-C-B...item3cae46e45c

nice but nearly 3amp consumption...

[Jem]

What about something like the 100 Watt one that Adam (Diachi) had at Surfleet?, now that was bright !

May need a car battery to operate it though

[andy_con]

didnt want to strap a car battery to my back but thanks jem lol

[MIIKKKLLLL]

Take a look at the "XM-L T6" led,

this is one of the most efficient LEDs on the market

http://www.ebay.com/itm/Top-Cree-Sin...item35bf8e080e

[andy_con]

^^^

not bad 3 and a bit volts at 3amps.

next is powering the thing?

ive been thinking battery and dynamo but then ive got to find the right electronics to get it all working.

[andy_con]

looks a bit bulky but its a good start

http://www.ebay.co.uk/itm/NEW-BICYCL...item2316795b32